Validation error with Template in data field?

[derandiunddasbo]

This alert...

alert2:
  alerts:
    - domain: sun
      name: is_shining
      friendly_name: Sunshine Alert
      done_message: Uhm... never mind.
      title: Sunshine Alert
      data:
        actions:
          - action: foo
            title: "{{ notify_reason }}"
      condition: "{{ is_state('sun.sun','above_horizon') }}"
      message: "The Sun is shining!"

... gives a validation error with Version 1.16.2:

error: alerts section of config: "data" field must be a dict for dictionary value @ data['data']. Relevant section: {'domain': 'sun', 'name': 'is_shining', 'friendly_name': 'Sunshine Alert', 'done_message': 'Uhm... never mind.', 'title': 'Sunshine Alert', 'data': 'actions:\n - action: foo\n title: "{{ notify_reason }}"', 'condition': "{{ is_state('sun.sun','above_horizon') }}", 'message': 'The Sun is shining!'}

Obviously because of the template {{ notify_reason }} used in the data section. If the template is omitted, the alert validates fine.

This isn't supposed to happen, or is it?

[redstone99]

Confirmed - it's a bug in the UI Alert config processing code. Templates in data field work in YAML but not in the UI.
Will fix.

[redstone99]

I just released v1.16.3 which should fix this issue. Can you give it a try?